Discuss the factors responsible for ascent of xylem sap in plants.

Discuss the factors responsible for rusting of iron.

The factor responsible for cirrhosis is

(a) What is galvanisation ? (b) Give three methods to protect iron from rusting. (c) Discuss the factors responsible for rusting of iron or corrosion. (d) Name a chemical which is used for preventing rusting of iron.

Which pressure is responsible for rise of sap in plant?

What are the factors responsible for global warming?

Mention three factors responsible for green revolution.

What is ascent of sap?

Which tissue is responsible for conduction of food in plants?